documentation/docs/void-desktop-setup/Laptop-management.md

To obtain enhanced battery lifespan, tlp and tlpui may be installed. The tlpui application may be used to monitor the general configuration of tlp.

# xbps-install -Sy tlp tlpui

Edit /etc/tlp.d/00-template.conf to set the battery usage to a more conservative setting.

CPU_ENERGY_PERF_POLICY_ON_AC=performance
CPU_ENERGY_PERF_POLICY_ON_BAT=power

The tlp service needs to be activated and also the acpid deamon is a necessity regarding obtaining all laptop functionality. Such as, brightness control, suspend when closing the lid etc.

# ln -s /etc/sv/tlp /var/service
# ln -s /etc/sv/acpid /var/service